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Texas Instruments LM3S2432-IQC50-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

Texas Instruments LM3S2432-IQC50-A2 ARM Cortex-M3 MCU, 50 MHz

MPNLM3S2432-IQC50-A2
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 2000 series LM3S2432-IQC50-A2, 32-bit single-core MCU at 50 MHz, 96 KB Flash, 32 KB RAM, CANbus/I²C/SPI/UART/USART, 3×10-bit ADC, 34 I/O, 100-LQFP, -40 to 85°C, 2.25–2.75 V, Tray.

$19.2779Ref. price · indicative, final on quote
Texas Instruments LM3S2432-IQC50-A2 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S2432-IQC50-A2 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 2000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.25V ~ 2.75V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTray
RAM size32K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityCANbus, I²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)34
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 3x10b
Program memory size96KB (96K x 8)

Product details

50 MHz Cortex-M3 with CANbus — what this part delivers

The LM3S2432-IQC50-A2: This is a Stellaris ARM Cortex-M3 32-bit single-core MCU clocked at 50 MHz, with 96 KB Flash and 32 KB RAM.

50 MHz core — timing margin for control loops

At 50 MHz, this Cortex-M3 executes single-cycle multiply and hardware divide, giving deterministic interrupt latency for motor-drive or CANopen node firmware. The 96 KB Flash holds a moderate code base — enough for a CAN gateway or sensor hub with a few protocol stacks, but not a full HMI with graphics. The 32 KB RAM supports a few kB of packet buffers and stack; watch the heap size if you are running multiple protocol layers.

This part is marked obsolete by Texas Instruments. No official successor is listed in the Stellaris line.

Frequently asked questions

What is the closest pin-compatible alternative to LM3S2432-IQC50-A2?

No official pin-compatible successor is listed for this part. For a replacement, consider the Stellaris or Tiva C Series from TI with similar peripheral set and 100-LQFP package; verify the 2.25–2.75 V supply and 50 MHz core speed for fit.

What is the listed speed of LM3S2432-IQC50-A2?

The core runs at 50 MHz, which is the maximum clock frequency for this ARM Cortex-M3 device.